
<template>
  <el-upload class="avatar-uploader"
             action=""
             :show-file-list="false"
             :before-upload="beforeAvatarUpload"
             :http-request="uploadImage">
    <img v-if="value"
         :src="value"
         class="avatar">
    <i v-else
       class="el-icon-plus avatar-uploader-icon"></i>
  </el-upload>
</template>


<style>
.avatar-uploader .el-upload {
  border: 1px dashed #d9d9d9;
  border-radius: 6px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}
.avatar-uploader .el-upload:hover {
  border-color: #409eff;
}
.avatar-uploader-icon {
  font-size: 28px;
  color: #8c939d;
  width: 178px;
  height: 178px;
  line-height: 178px;
  text-align: center;
}
.avatar {
  width: 178px;
  height: 178px;
  display: block;
}
</style>

<script>
import COS from 'cos-js-sdk-v5';
export default {
  props: {
    value: {
      type: String,
      default: ''
    }
  },
  methods: {
    beforeAvatarUpload (file) {
      const isJPG = ['image/jpeg', 'image/png', 'image/gif', 'image/bmp'].includes(file.type)
      const isLt2M = file.size / 1024 / 1024 < 5;

      if (!isJPG) {
        this.$message.error('上传头像图片只能是 JPG PNG GIF BMP格式!');
      }
      if (!isLt2M) {
        this.$message.error('上传头像图片大小不能超过 5MB!');
      }
      return isJPG && isLt2M;
    },
    uploadImage (params) {
      console.log(params.file);

      this.$cos.putObject({
        Bucket: 'heimahr-1324482077',
        Region: 'ap-nanjing',
        Key: params.file.name,
        StoreAgeClass: 'STANDARD',
        Body: params.file
      }, (err, data) => {
        console.log(err, data);
        if (data.statusCode === 200 && data.Location) {
          // 拿到了云返回地址
          this.$emit('input', `http://${data.Location}`)
        } else {
          this.$message.error('上传失败')
        }
      })
    }
  }
}
</script>